zhuanhuan.java

一个进制转换的小程序

import java.io.*;
import java.awt.*;
import java.awt.event.*;
public class Zhuanhuan extends Frame implements ActionListener,WindowListener
{
	private TextField text_shi,text_er,text_ba,text_shiliu;
	private Dialog dialog;
	private Label label_dialog;
	public Zhuanhuan()
	{
		super("十进制整数转换");
		this.setSize(200,160);
		this.setResizable(false);
		this.setBackground(java.awt.Color.lightGray);
		this.setLocation(380,220);
		this.setLayout(new java.awt.FlowLayout(FlowLayout.LEFT));
		
		this.add(new Label("    十进制"));
		text_shi=new TextField(6);
		this.add(text_shi);
		text_shi.addActionListener(this);
		
		this.add(new Label("    二进制"));
		text_er=new TextField(12);
		this.add(text_er);
		text_er.setEditable(false);
		
		this.add(new Label("    八进制"));
		text_ba=new TextField(12);
		this.add(text_ba);
		text_ba.setEditable(false);
		
		this.add(new Label("十六进制"));
		text_shiliu=new TextField(12);
		this.add(text_shiliu);
		text_shiliu.setEditable(false);
		
		this.addWindowListener(this);
		this.setVisible(true);
		
		dialog=new Dialog(this,"提示",true);
		dialog.setSize(240,80);
		label_dialog=new Label("",Label.CENTER);
		dialog.add(label_dialog);
		dialog.addWindowListener(this);
	}
	
	public void actionPerformed(ActionEvent e)
	{
		try
		{
			int x=Integer.valueOf(text_shi.getText()).intValue();
			text_er.setText(Integer.toBinaryString(x));
			text_ba.setText(Integer.toOctalString(x));
			text_shiliu.setText(Integer.toHexString(x));
		//	text_er.setText(x.toBinaryString());
		//	text_er.setText(decimalToBinary(text_shi.getText()));
	    //  String strBin = hexToBinary(strHex);
        //  strDec = binaryToDecimal(strBin);
        //  Integer.parseInt(binary,2);
        //  Integer.parseInt(text_shi.getText(),2);
             
		
		}
		catch(NumberFormatException xj)
		{
			label_dialog.setText("\""+text_shi.getText()+"\"输入错误，请重新输入！");
			dialog.setLocation(this.getX()+100,this.getY()+100);
			dialog.setVisible(true);
		}
		finally
		{
			text_shi.setText("");
			text_er.setText("");
			text_ba.setText("");
			text_shiliu.setText("");
		}
	}
	public void windowClosing(WindowEvent e)
	{
		if(e.getSource()==dialog)
		      dialog.setVisible(false);
		else   
		      System.exit(0);
	}
	public void windowOpened(WindowEvent e){}
	public void windowActivated(WindowEvent e){}
	public void windowDeactivated(WindowEvent e){}
	public void windowClosed(WindowEvent e){}
	public void windowIconified(WindowEvent e){}
	public void windowDeiconified(WindowEvent e){}
	
	public static void main(String[] args)
	{
		new Zhuanhuan();
	}

}